CN111249788A - Sewage residue filtering device - Google Patents
Sewage residue filtering device Download PDFInfo
- Publication number
- CN111249788A CN111249788A CN202010239214.XA CN202010239214A CN111249788A CN 111249788 A CN111249788 A CN 111249788A CN 202010239214 A CN202010239214 A CN 202010239214A CN 111249788 A CN111249788 A CN 111249788A
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- collecting tank
- filter
- water collecting
- box body
- fixed
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- 239000010865 sewage Substances 0.000 title claims abstract description 30
- 238000001914 filtration Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000005192 partition Methods 0.000 claims abstract description 17
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 claims 1
- 240000007643 Phytolacca americana Species 0.000 claims 1
- 235000009074 Phytolacca americana Nutrition 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 5
- 239000012535 impurity Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to a sewage residue filtering device, which effectively solves the problems that a filter screen is not cleaned timely and needs electric power; the technical scheme for solving the problem is that the device comprises a fixed box body, wherein a filter is arranged in the box body, and a conveyor belt penetrating through the box body is arranged below the filter; the box body is provided with a pin capable of resetting, and the pin blocks the partition plate, so that the filter does not rotate under the impact of water flow; a pipeline which is arranged in the front-back direction and is fixedly arranged penetrates through the cylinder, a flow dividing pipe is fixed on the pipeline, and a water collecting tank which can move up and down and reset upwards is arranged below the flow dividing pipe; a siphon is arranged in the water collecting tank, a vertical rack is fixed at the bottom of the water collecting tank, a rotating shaft is fixed below the water collecting tank, a gear meshed with the rack is arranged on the rotating shaft, and the water collecting tank descends to drive the conveying belt to rotate; the water collecting tank ascends to reset energy and stirs the pin to move back and forth once, so that the filter rotates once; the invention improves the speed and quality of sewage filtration, simplifies the operation and saves the power.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage residue filtering device.
Background
When sewage is filtered, a large amount of suspended substances in the sewage need to be removed by using the filter screen plate, but impurities can be accumulated on the screen plate when the sewage is filtered, so that the filter screen plate is pressed and blocked, the water yield of the filter screen plate can be reduced, and the filtering efficiency can be reduced.
The existing chain conveyor belt which is inclined is mostly adopted to filter and discharge the impurities, but the filtering effect is limited; small particles can not be filtered and directly pass through the chain; the sundries with large volume can not be taken away in time, and a large amount of sundries can be gathered at the front side of the filtering device; meanwhile, other various filtering devices are provided, and the filtering effect is influenced due to the fact that the filter screen cannot be replaced in time and the like; meanwhile, devices on the market at present need to be driven by electric power, so that conveying of sundries or cleaning of a filter screen are achieved, cost is increased, and the device is not environment-friendly enough. There is therefore a need to address this problem.
Disclosure of Invention
In view of the above situation, the present invention provides a sewage filtering apparatus, which can effectively solve the problems of untimely cleaning of a filter screen, poor filtering effect, need of additional electric power for driving, etc., in order to solve the problems existing in the prior art.
The technical scheme for solving the problem is that the device comprises a fixed box body, wherein a filter is arranged in the box body, and a conveyor belt penetrating through the box body is arranged below the filter; the filter comprises a cylinder penetrating through the front side surface and the rear side surface of the box body, and the cylinder can rotate; two disks positioned in the box body are fixedly sleeved outside the cylinder, and a plurality of radial partition plates are uniformly distributed on the circumference between the front disk and the rear disk; the cylindrical part between the two discs is a filter screen; the upper end of the box body is provided with a water inlet positioned above the filter, and the water inlet is inclined leftwards; the box body is provided with a pin capable of resetting, and the pin blocks the partition plate, so that the filter does not rotate under the impact of water flow;
a pipeline which is fixedly arranged in the front-back direction penetrates through the cylinder, the upper end of the pipeline is in an open shape, the front end of the pipeline is blocked, and the rear end of the pipeline is open; a vertical flow dividing pipe is fixed on the pipeline, and a water collecting tank which can move up and down and reset upwards is arranged below the flow dividing pipe; a siphon is arranged in the water collecting tank, a vertical rack is fixed at the bottom of the water collecting tank, a rotating shaft is fixed below the water collecting tank, a gear meshed with the rack is arranged on the rotating shaft, the water collecting tank descends, and the rotating shaft rotates slowly in the positive direction to drive the conveying belt to rotate; the water collecting tank is lifted and reset, and the rotating shaft is rapidly reversed to stir the pin to move back and forth once.
The invention improves the speed and quality of sewage filtration, simplifies the operation and saves the power.
Drawings
FIG. 1 is a front sectional view of the present invention.
FIG. 2 is a left side sectional view of the present invention.
Fig. 3 is a partial enlarged view of the invention at a in fig. 1.
Fig. 4 is a perspective view of the pipe and the filter.
Fig. 5 is a schematic view of the rack and guide rod mating.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 5, the invention comprises a fixed box body 1, a filter 2 is arranged in the box body 1, and a conveyor belt 24 penetrating through the box body is arranged below the filter; the filter 2 comprises a cylinder 201 penetrating through the front and rear side surfaces of the box body 1, and the cylinder 201 can rotate; two disks 202 positioned in the box body 1 are fixedly sleeved outside the cylinder 201, and a plurality of radial partition plates 203 are uniformly distributed on the circumference between the front disk 202 and the rear disk 202; the part of the cylinder 201 between the two discs 202 is a sieve 204; the upper end of the box body 1 is provided with a water inlet 3 positioned above the filter 2, and the water inlet 3 is inclined leftwards; the box body 1 is provided with a pin 4 which can be reset, and the pin 4 blocks the partition plate 203, so that the filter 2 does not rotate under the impact of water flow;
a pipeline 5 which is arranged in a front-back direction and is fixedly arranged penetrates through the cylinder 201, the upper end of the pipeline 5 is open, the front end of the pipeline 5 is blocked, and the rear end is open; a vertical shunt pipe 6 is fixed on the pipeline 5, and a water collecting tank 7 which can move up and down and reset upwards is arranged below the shunt pipe 6; a siphon 8 is arranged in the water collecting tank 7, a vertical rack 9 is fixed at the bottom of the water collecting tank 7, a rotating shaft 10 is fixed below the water collecting tank 7, a gear 11 meshed with the rack 9 is arranged on the rotating shaft 10, the water collecting tank 7 descends, and the rotating shaft 10 rotates forwards slowly to drive a conveyor belt 24 to rotate; the water collecting tank 7 is lifted and reset, and the rotating shaft 10 is quickly reversed to stir the pin 4 to reciprocate once.
In order to realize the control of the rotation interval of the filter 2, a water baffle 12 capable of moving back and forth is inserted on the shunt pipe 6, and the water flow of the shunt pipe 6 can be adjusted after the baffle is moved.
In order to enable the matching of the rack 9 and the gear 11 to be more stable, the rack 9 is in a sleeve shape, teeth of the rack 9 are arranged on the outer edge surface of the sleeve shape, a guide rod 13 is inserted into the rack 9, and the lower end of the guide rod 13 is fixed on the ground.
In order to realize that the rotating shaft 10 rotates positively to drive the conveying belt 24 to rotate, the rotating shaft 10 is sleeved with a first one-way wheel 14, and the first one-way wheel 14 drives the conveying belt 24 to rotate through a belt and a belt pulley.
In order to realize the reverse rotation of the rotating shaft 10, the pin 4 can be toggled to reciprocate once, a shell 15 is sleeved on the outer side of the pin 4, the shell 15 is fixed in the box body 1, a pressure spring 16 is installed between the pin 4 and the shell 15, and a first toggle lever 17 is fixed on the pin 4; the box body 1 is provided with a wheel 18, the wheel 18 is provided with a second deflector rod 19 which can stir the first deflector rod 17, the wheel 18 rotates for a circle, and the second deflector rod 19 stirs the first deflector rod 17 for one time; the rotating shaft 10 is provided with a second one-way wheel 20, and the second one-way wheel 20 and the wheel 18 are in transmission through a belt and a belt pulley.
In order to realize the installation and the reset of the water collecting tank 7, a plurality of spring telescopic rods 21 are installed at the bottom of the water collecting tank 7, one end of each spring telescopic rod 21 is fixed with the bottom of the water collecting tank 7, and the other end of each telescopic rod is fixed on the ground.
In order to ensure the stable rotation of the cylinder 201, a plurality of rollers 22 clamped around the cylinder 201 are installed on the front and rear side surfaces of the box body 1.
In order to ensure better filtration of the contaminated water, the disc 202 is in clearance fit with the side wall of the tank 1.
In order to better convey the sundries, the surface of the conveyor belt 24 is provided with a vertical barrier strip 23.
When the device is used, the position of the device is needed to be arranged firstly, and the device is arranged at a low position, such as a position between floors of a sewage treatment plant, because the dead weight of water is utilized, so that sewage is filtered by the device and flows into the next layer; or according to the situation on site, the water level difference is reasonably utilized, so that the device is arranged at a low position to be convenient for receiving sewage flow.
After the installation site is selected, the device may be secured, the secured device being as shown in fig. 1 and 2. Then the sewage can enter through the water inlet 3 above the box body 1.
In the initial state, the whole state is as shown in fig. 1, the number of the partition plates 203 is four, the water inlet 3 is positioned between the two partition plates 203, and the water inlet 3 is inclined toward the left side, so that the whole filter 2 has a tendency to rotate to the left by the impact of the sub-water flow, but the whole filter 2 cannot rotate at this time because the pin 4 is in a state of blocking the partition plates 203.
After the sewage is filtered by the screen 204 in the middle of the filter 2, impurities can remain between the two partition plates 203, and the filtered sewage can flow down from the screen 204, flow into the pipe 5 and then flow backwards along the pipe 5.
Because the pipeline 5 is provided with the vertical shunt tubes 6, the sewage part flows away through the pipeline 5 and enters the next process; another part of the sewage flows into the water collecting tank 7 from the flow dividing pipe 6; a siphon pipe 8 is arranged in the water collecting tank 7, and water in the water collecting tank 7 cannot flow away at the U-shaped position where the water level does not exceed the siphon pipe 8; therefore, the weight of the water collecting tank 7 is heavier and heavier, the spring telescopic rod 21 below the water collecting tank 7 is compressed, and when the water collecting tank 7 descends, the rack 9 is driven to descend, so that the rack 9 drives the gear 11 to rotate, and the rotating shaft 10 is further driven to rotate forwards.
Because the rotating shaft 10 is provided with the first one-way wheel 14 and the second one-way wheel 20, when the rotating shaft 10 rotates forwards, the first one-way wheel 14 can rotate and drive the transmission belt to rotate through the belt and the belt pulley, so that the transmission belt 24 can slowly move; after the conveyor belt 24 moves, the sundries on the conveyor belt 24 can be conveyed to a uniform place for accumulation or batch transfer; during this process, the wheel 18 will remain stationary and the pin 4 will remain stationary due to the action of the second one-way wheel 20.
The position of the water collecting tank 7 is lower and lower along with the increase of the water level, when the water level is increased to be higher than the U shape of the siphon pipe 8, the water in the water collecting tank 7 is quickly discharged by the siphon pipe 8 due to the siphon effect, a little water is left in the water collecting tank 7, and the siphon effect is stopped after the siphon pipe 8 cannot suck the water; when water in the water collecting tank 7 is emptied, the water collecting tank 7 can be quickly reset upwards under the action of the spring telescopic rod 21, and the rotating shaft 10 is driven to quickly rotate anticlockwise through the matching of the gear 11 and the rack 9; after the rotating shaft 10 rotates counterclockwise, the second one-way wheel 20 can drive the wheel 18 to rotate for one circle through the belt and the belt pulley; as the wheel 18 rotates, the second driving lever 19 on the wheel 18 drives the first driving lever 17 to move the pin 4 backwards, so that the pin 4 does not block the partition 203, and then the whole filter 2 can rotate; then, after the wheel 18 rotates for one circle, the second driving lever 19 can be separated from the first driving lever 17, so that the pin 4 is reset under the action of the pressure spring 16; the pin 4 will then be in position again blocking the partition 203; after the filter 2 is rotated ninety degrees, the pin 4 will again block the next partition 203, keeping the filter 2 stable.
In the process of rotating the filter 2, the impurities which are originally positioned above can rotate downwards along with the filter 2 and gradually rotate to the downward position, so that the impurities fall onto the conveyor belt 24; then transported away by the conveyor belt 24 and collected by a subsequent device; therefore, along with the rotation of the gap of the filter, the impurities which are originally positioned above the filter can be separated from the filter, and are separated from the filter after being overturned, so that the cleanness of the filter is kept; and meanwhile, the filter screen cleaning area after deslagging rotates to the upper part again for filtering operation.
When the impurities in the sewage are more, the rotating interval of the filter 2 can be properly adjusted fast, and the specific mode is that the water flow of the flow dividing pipe 6 is increased by pulling the water baffle 12, so that the water collecting speed of the water collecting tank 7 is increased, the reciprocating up-and-down movement frequency of the water collecting tank 7 is improved, and the rotating speed of the conveyor belt 24 can be improved; ensures that sundries can be quickly cleaned. Correspondingly, when the content of impurities is low, the water flow speed of the shunt pipe 6 can be reduced, so that the rotation period of the filter 2 is shortened, and the mechanical wear and the aging speed of parts are reduced.
The device realizes the transmission of the conveyor belt 24 on one hand and the expansion and contraction of the control pin 4 on the other hand by utilizing the up-and-down reciprocating movement of the water collecting tank 7, thereby indirectly controlling the rotation and the stop of the filter 2. The transfer of the conveyor belt 24 is accomplished directly by the gravity of the water without additional power.
The device is provided with the rotatable filter 2, and the plurality of partition plates 203 are arranged in the filter 2, so that the device has the function of dividing areas on one hand, and the partition plates 203 and the pins 4 have the function of limiting on the other hand; the water outlet is obliquely arranged, so that the filter 2 always has a rotating trend, and when the pin 4 is not positioned on the limiting partition plate 203, the impact of water flow can enable the filter 2 to rotate, so that sundries are rotated to the lower part, and automatic cleaning is realized.
This device sets up shunt tubes 6 and breakwater 12 can make things convenient for quick regulation shunt tubes 6 rivers to play the frequency of adjusting water tank 7 reciprocating motion, directly influenced the time interval of debris clearance, adaptation and the sewage that contains the debris volume difference.
The invention has the advantages of convenient operation, ingenious structure, low cost, convenient manufacture, safety and effectiveness, greatly improves the speed and the quality of sewage filtration, simplifies the operation, saves the power and realizes the unattended automatic work.
Claims (8)
1. A sewage residue filtering device comprises a fixed box body (1), and is characterized in that a filter (2) is arranged in the box body (1), and a conveyor belt (24) penetrating through the box body is arranged below the filter; the filter (2) comprises a cylinder (201) penetrating through the front side surface and the rear side surface of the box body (1), and the cylinder (201) can rotate; two disks (202) positioned in the box body (1) are fixedly sleeved outside the cylinder (201), and a plurality of radial partition plates (203) are uniformly distributed between the front disk (202) and the rear disk (202) on the circumference; the part of the cylinder (201) positioned between the two discs (202) is a filter screen (204); the upper end of the box body (1) is provided with a water inlet (3) positioned above the filter (2), and the water inlet (3) is inclined leftwards; the box body (1) is provided with a pin (4) which can reset, and the pin (4) blocks the partition plate (203), so that the filter (2) does not rotate under the impact of water flow;
a pipeline (5) which is arranged in a fixed manner in the front-back direction penetrates through the cylinder (201), the upper end of the pipeline (5) is open, the front end of the pipeline (5) is blocked, and the rear end is open; a vertical shunt pipe (6) is fixed on the pipeline (5), and a water collecting tank (7) which can move up and down and reset upwards is arranged below the shunt pipe (6); a siphon (8) is arranged in the water collecting tank (7), a vertical rack (9) is fixed at the bottom of the water collecting tank (7), a rotating shaft (10) is fixed below the water collecting tank (7), a gear (11) meshed with the rack (9) is arranged on the rotating shaft (10), the water collecting tank (7) descends, and the rotating shaft (10) rotates clockwise slowly to drive the conveyor belt (24) to rotate; the water collecting tank (7) is lifted and reset, and the rotating shaft (10) is quickly reversed to pull the pin (4) to reciprocate once.
2. A sewage filter residue device according to claim 1, wherein the dividing pipe (6) is inserted with a water baffle (12) which can move back and forth, and the water flow of the dividing pipe (6) can be adjusted after the baffle is moved.
3. A sewage residue filtering apparatus according to claim 1, wherein the rack (9) is sleeve-shaped, teeth of the rack (9) are arranged on the outer edge surface of the sleeve shape, a guide rod (13) is inserted into the rack (9), and the lower end of the guide rod (13) is fixed on the ground.
4. The sewage residue filtering device according to claim 1, wherein the rotating shaft (10) is sleeved with a first one-way wheel (14), and the first one-way wheel (14) drives the conveying belt (24) to rotate through a belt and a belt pulley.
5. The sewage residue filtering device according to claim 1, wherein a shell (15) is sleeved outside the pin (4), the shell (15) is fixed inside the box body (1), a pressure spring (16) is installed between the pin (4) and the shell (15), and a first driving lever (17) is fixed on the pin (4); a wheel (18) is arranged on the box body (1), a second deflector rod (19) capable of poking the first deflector rod (17) is arranged on the wheel (18), the wheel (18) rotates for a circle, and the second deflector rod (19) pokes the first deflector rod (17) for one time; the rotating shaft (10) is provided with a second one-way wheel (20), and the second one-way wheel (20) and the wheel (18) are in transmission through a belt and a belt pulley.
6. A sewage residue filtering device according to claim 1, wherein a plurality of spring telescopic rods (21) are installed at the bottom of the water collecting tank (7), one end of each spring telescopic rod (21) is fixed with the bottom of the water collecting tank (7), and the other end of each telescopic rod is fixed on the ground.
7. A sewage residue filtering device according to claim 1, wherein a plurality of rollers (23) clamped around the cylinder (201) are arranged on the front and rear side surfaces of the box body (1).
8. A sewage filter residue plant according to claim 1, wherein the surface of the conveyor belt (24) is provided with vertical bars (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239214.XA CN111249788B (en) | 2020-03-30 | 2020-03-30 | Sewage residue filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010239214.XA CN111249788B (en) | 2020-03-30 | 2020-03-30 | Sewage residue filtering device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111249788A true CN111249788A (en) | 2020-06-09 |
| CN111249788B CN111249788B (en) | 2022-01-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010239214.XA Active CN111249788B (en) | 2020-03-30 | 2020-03-30 | Sewage residue filtering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111249788B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768360A (en) * | 2022-03-28 | 2022-07-22 | 青岛西海岸市政工程有限公司 | Sewage treatment pump station with water quality testing and multistage filtering capability |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015754A (en) * | 2007-01-01 | 2007-08-15 | 常熟市华能水处理设备有限责任公司 | Filter |
| CN203899252U (en) * | 2014-05-11 | 2014-10-29 | 浙江华晨环保有限公司 | Self-cleaning vertical filter |
| CN107961572A (en) * | 2017-11-28 | 2018-04-27 | 重庆市乐珐机电有限责任公司 | Cutting fluid filter plant |
| CN207899099U (en) * | 2018-01-06 | 2018-09-25 | 广东聚晟建设工程有限公司 | River sewage processing unit |
| CN108911223A (en) * | 2018-08-31 | 2018-11-30 | 苏州华烯环保科技有限公司 | A kind of processing equipment for sewage |
-
2020
- 2020-03-30 CN CN202010239214.XA patent/CN111249788B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015754A (en) * | 2007-01-01 | 2007-08-15 | 常熟市华能水处理设备有限责任公司 | Filter |
| CN203899252U (en) * | 2014-05-11 | 2014-10-29 | 浙江华晨环保有限公司 | Self-cleaning vertical filter |
| CN107961572A (en) * | 2017-11-28 | 2018-04-27 | 重庆市乐珐机电有限责任公司 | Cutting fluid filter plant |
| CN207899099U (en) * | 2018-01-06 | 2018-09-25 | 广东聚晟建设工程有限公司 | River sewage processing unit |
| CN108911223A (en) * | 2018-08-31 | 2018-11-30 | 苏州华烯环保科技有限公司 | A kind of processing equipment for sewage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768360A (en) * | 2022-03-28 | 2022-07-22 | 青岛西海岸市政工程有限公司 | Sewage treatment pump station with water quality testing and multistage filtering capability |
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| Publication number | Publication date |
|---|---|
| CN111249788B (en) | 2022-01-25 |
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Effective date of registration: 20211230 Address after: 138000 Yada industrial concentration area, Ning Jiang District, Songyuan, Jilin Applicant after: Songyuan Xinxiang new energy Co.,Ltd. Address before: 450000 Zhengzhou water conservancy building, No. 110, Yinghe Road, Zhongyuan District, Zhengzhou City, Henan Province Applicant before: He Yiliang |
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